python-tblib fails to build with Python 3.13.0a5.

____________________________ test_install[class-5] _____________________________
tests/test_pickle_exception.py:95: in test_install
    assert expected_format_exception == strip_locations(''.join(format_exception(type(exc), exc, exc.__traceback__)))
E   assert 'Traceback (most recent call last):\n  File "/builddir/build/BUILD/tblib-3.0.0/tests/test_pickle_exception.py", line 47, in test_install\n    1 / 0  # noqa: B018\nZeroDivisionError: division by zero\n\nDuring handling of the above exception, another exception occurred:\n\nTraceback (most recent call last):\n  File "/builddir/build/BUILD/tblib-3.0.0/tests/test_pickle_exception.py", line 50, in test_install\n    raise ValueError(\'blah\')\nValueError: blah\n\nThe above exception was the direct cause of the following exception:\n\nTraceback (most recent call last):\n  File "/builddir/build/BUILD/tblib-3.0.0/tests/test_pickle_exception.py", line 59, in test_install\n    raise new_e from e\ntest_pickle_exception.CustomError: foo\nnote 1\nnote 2\n' == 'Traceback (most recent call last):\n  File "/builddir/build/BUILD/tblib-3.0.0/tests/test_pickle_exception.py", line 47, in test_install\n    1 / 0  # noqa: B018\n    ~~^~~~~\nZeroDivisionError: division by zero\n\nDuring handling of the above exception, another exception occurred:\n\nTraceback (most recent call last):\n  File "/builddir/build/BUILD/tblib-3.0.0/tests/test_pickle_exception.py", line 50, in test_install\n    raise ValueError(\'blah\')\n    ^^^^^^^\nValueError: blah\n\nThe above exception was the direct cause of the following exception:\n\nTraceback (most recent call last):\n  File "/builddir/build/BUILD/tblib-3.0.0/tests/test_pickle_exception.py", line 59, in test_install\n    raise new_e from e\n    ^^^^^^^^^^^\ntest_pickle_exception.CustomError: foo\nnote 1\nnote 2\n'
E       Traceback (most recent call last):
E         File "/builddir/build/BUILD/tblib-3.0.0/tests/test_pickle_exception.py", line 47, in test_install
E           1 / 0  # noqa: B018
E     -     ~~^~~~~
E       ZeroDivisionError: division by zero
E       
E       During handling of the above exception, another exception occurred:
E       
E       Traceback (most recent call last):
E         File "/builddir/build/BUILD/tblib-3.0.0/tests/test_pickle_exception.py", line 50, in test_install
E           raise ValueError('blah')
E     -     ^^^^^^^
E       ValueError: blah
E       
E       The above exception was the direct cause of the following exception:
E       
E       Traceback (most recent call last):
E         File "/builddir/build/BUILD/tblib-3.0.0/tests/test_pickle_exception.py", line 59, in test_install
E           raise new_e from e
E     -     ^^^^^^^^^^^
E       test_pickle_exception.CustomError: foo
E       note 1
E       note 2
=========================== short test summary info ============================
FAILED tests/test_pickle_exception.py::test_install[global-1] - assert 'Trace...
FAILED tests/test_pickle_exception.py::test_install[global-2] - assert 'Trace...
FAILED tests/test_pickle_exception.py::test_install[global-3] - assert 'Trace...
FAILED tests/test_pickle_exception.py::test_install[global-4] - assert 'Trace...
FAILED tests/test_pickle_exception.py::test_install[global-5] - assert 'Trace...
FAILED tests/test_pickle_exception.py::test_install[instance-1] - assert 'Tra...
FAILED tests/test_pickle_exception.py::test_install[instance-2] - assert 'Tra...
FAILED tests/test_pickle_exception.py::test_install[instance-3] - assert 'Tra...
FAILED tests/test_pickle_exception.py::test_install[instance-4] - assert 'Tra...
FAILED tests/test_pickle_exception.py::test_install[instance-5] - assert 'Tra...
FAILED tests/test_pickle_exception.py::test_install[class-1] - assert 'Traceb...
FAILED tests/test_pickle_exception.py::test_install[class-2] - assert 'Traceb...
FAILED tests/test_pickle_exception.py::test_install[class-3] - assert 'Traceb...
FAILED tests/test_pickle_exception.py::test_install[class-4] - assert 'Traceb...
FAILED tests/test_pickle_exception.py::test_install[class-5] - assert 'Traceb...
======================== 15 failed, 28 passed in 0.92s =========================

https://docs.python.org/3.13/whatsnew/3.13.html

For the build logs, see:
https://copr-be.cloud.fedoraproject.org/results/@python/python3.13/fedora-rawhide-x86_64/07211444-python-tblib/

For all our attempts to build python-tblib with Python 3.13, see:
https://copr.fedorainfracloud.org/coprs/g/python/python3.13/package/python-tblib/

Testing and mass rebuild of packages is happening in copr.
You can follow these instructions to test locally in mock if your package builds with Python 3.13:
https://copr.fedorainfracloud.org/coprs/g/python/python3.13/

Let us know here if you have any questions.

Python 3.13 is planned to be included in Fedora 41.
To make that update smoother, we're building Fedora packages with all pre-releases of Python 3.13.
A build failure prevents us from testing all dependent packages (transitive [Build]Requires),
so if this package is required a lot, it's important for us to get it fixed soon.

We'd appreciate help from the people who know this package best,
but if you don't want to work on this now, let us know so we can try to work around it on our side.